Fetal heart rate monitoring is the abbreviation of uterine contraction. It is a graph that applies the electronic fetal heart rate monitor to record the fetal heart rate curve and uterine pressure waveform for clinical analysis, which is the main test to correctly evaluate the fetal intrauterine condition and has no adverse effects on the fetus.
Fetal heart rate monitoring is commonly conducted before and during delivery.
Fetal heart rate monitoring before delivery
For pregnant women who need fetal heart rate monitoring, it should generally be performed around 36 weeks of gestation. There are two ways of commonly used tests:
1) Nonstress Test (NST)
Mainly observe the change of fetal heart rate during fetal movement, applicable to:
- Pregnant women who have severe pregnancy poisoning, severe anemia, heart disease, chronic nephritis, diabetes and other diseases and insufficient placental function;
- Those whose fetuses are stunted in the womb;
- Those who pregnancy has expired and the due date has passed two weeks;
- A routine checker before the oxytocin test.
2) Oxytocin Test (OCT)
It mainly measures the gas exchange function of the placenta and observes the change of fetal heart rate during uterine contraction. Applies to:
- Those who do not respond normally to the no-load test;
- Whose placental function is insufficient through other methods In high-risk pregnancies;
- Those whose fetuses are stunted in the womb.
(This kind of test is contraindicated in the following situations: vaginal bleeding, cervical insufficiency, a history of premature delivery or current symptoms of threatened premature delivery, or those who suspect that the fetus has severe hypoxia in the uterus.)
Fetal heart rate monitoring during delivery
This way of monitoring helps us to know whether the fetus is acutely hypoxic during delivery. Observation objects: 1)the baseline change of the fetal heart rate when there is no uterine contraction; 2)the baseline change of the fetal heart rate when the uterus is contracted; 3）and the periodic change of the fetal heart rate when the uterus is contracted.
If after a period of continuous observation, there is a late deceleration of the fetal heart rate that cannot return to normal, it usually means that the fetus has severe intrauterine asphyxia and acidosis. At this time, the uterine orifice has not been fully opened, and it is necessary to hurry up to prepare for the caesarean section and active rescue measures for newborns.
Heal Force Fetal Monitor-Artemis 4 Monitor
• 10.2″ Inch large-screen color TFT display, digital display and waveform oscilloscope of twins heart rate(FHR) and uterine contraction pressure (TOCO)value
• Directly viewing 1: 1 scale of display and print out the waveform
• 7-wafer impulse ultrasound transducer, configured with special HR self-correlation reading algorithm to ensure correct and reliable fetal heart rate(FHR) measurement
• Auto power failure protection and reliable rechargeable Li-ion battery can realize continual monitoring function